it is an equilateral trianglethanks for yaws other answers!
square
polygon
The figure is a Regular polygon.
Any "regular" polygon.
A figure with 4 equal sides and 4 equal angles is a square :)
The sum of the measures of the angles in a figure having 9 sides is 20 degrees each angle.
A regular polygon
This is a rectangle. Each of its vertex angles measures 90°. It does not have 4 equal sides but opposite sides are equal.
A figure with four equal sides and no right angles is a rhombus. A rhombus is comprised of two acute angles and two obtuse angles.
If only two sides of one figure are congruent to two sides of another figure, you can say nothing about the opposite angles.
an equilateral triangle has all its angle and sides equal
A general quadrilateral.